Bolt lock for demountable rims



PATENT OFFICE.

UNITED STATES WILLIAM E LOTT, OF NEWARK, NEW JERSEY.

norm noon Eon nsmounmmm RIMS.

:1 i anus.

To wi'ionr it may cameo/u Locks tor Deniountabie e it known that l, W 11.14am: F1. LOTT, a citiaem oi the Dominion oi: Canada, and a .iesidi-mt oi nowaili, n the county 0 ssen and State 01'? New Jersey, have invented certain new and useful I1n arovements in Bolt lliuis, of which the following is a s})ecilication. r

This lllvviitifiii relates to locking means for bolts or chunping devices of any sortand is particularly designed tor the clamping members oi? demountable rims. 1

The object oi this invention is to provide a device oil. this character in which the clamp or clip will be secured. by the usual nut on the bolt but when it is desired to remove the rim. it is only necessary to give a partial turn ot a special locking disc that will release the clamping pi ice and permit its removal with out taking out the bolt. 1

in the accompanying drawing showing one embmiiment of my invention, Fig. 1 is a side elemtion ot a portion of a wheel rim,

with the device in place.

nut and .lfig. i a cross "action through the same.

Fig. :3 is a side elevation oi the parts shown in F l i z l indicates the clamp piece and the ing washer.

Fig. 5 shows the bolt.

"l ig. 6 shows a locking disc.

This invention. is applicable to any use where a bolt serves to look a member through which the bolt passes, and will permit release o'lthc member by thepartial turn of a locking disc.

The invention is shown applied to a rim look as used on motor vehicles for securing the demountable rim. I show a telly 2 having a bore 3, to receive the bolt 4, which felly has the usual base plate or back 5 secured thereto. The demountable rim 6 of any desired shape, is secured at one side by a clip 7, permanently secured to the telly or plate 5 as shown in. Fig. 52. These parts can be of theusual or any desired construction. To secure the rim 6 on the other side I provide a clip 8, having a slot 9 therein, extending transverse to the rim, and which rim has a wedge portion 10 that when the clip is drawn toward the telly 3 by the bolt a will engage the rim 6 and together with the clip 7 will lock the rim to the telly, in the usual manner. It is understood that a series of these are arranged around the rim as indicated in Fig. 1.

Speoificati onof LettersPatent. Pate t d lay 16 1922 Application filed March 5, 1921. Serial No. 449,979. 1

ielly,.on the bolt. The other end 01'' the bolt .4. is provided with cross head, somewhat in the form of a pair of arms projecting oppositcly thereon. The slot 9 in the clip 8 is of a size to permit passage of the head 14: therethrough, and if desired the end portion 15 of the bolt may be enlarged to provide greater strength, see Fig. 5. This end p0rtion is provided with a flattened part, shown something like a flange 1.6, with two opposite flat sides, alining with the cross head 141. The purpose of this flattened portion is to engage the walls of the slot 9, and prevent turning of the bolt in the clip 8, as shown in Fig. 2.

I further provide a cam washer having a slot to pass over the cross head 14, and when turned on the bolt, to engage the clip 8, and

force the bolt outwardly relative to the chp.

This cam disc is shown in Fig. 6 in the form of a disc .17 having a slot 18, therein to permit it to pass over the cross head 14: and turn on the enlarged stem 15 of the bolt. The inner face 16 oi the disc is shown fiat while the outer "face is provided on each side of the slot .18 with caln portions 19 and 20. It will be understood that this cam disc when placed on the bolt as in Fig. 2, and turned in one direction can have its cam face engage the inner walls of the cross head 14 and will force the cross head away from the clip. In the use of this arrangement the bolt is passed through the telly, and the clip and cam washer placed on the head end as shown. Thereupon the cam is turned a slight distance to bring the inner walls 21 of the cross head arms to engage the cam face, and then the spring washer 13, and the nut 11, are applied and the nut screwed up fairly tight. This will pull the bolt head. against the cam disc, and the latter will force the clip 8, inwardly toward the telly to clamp the rim in position in the usual manner. Thereupon the cam ring is turned as by engagement with a lug 22 thereon by any suitable tool or hammer and this cam face will bind against the cross head and securely lock the clip against the rim. When it is desired to again remove the rim, the nut 11 does not need to be disturbed, but the cam disc is sin1- ply given a turn backward and by striking the lug 22 and the cross head will ride down the cam face, to relieve the pressure on the bolt. The cam face is turned until this slot registers with the cross head, when the disc can beremoved from the bolt head. This will free the clip 8 that can also be removed from the bolt, and the rim is now loose on the telly. The flattened portion 16 of the bolt serves to prevent its turning relative to the clip 8 and the latter can not turn because of the ledge 23 thereon engaging the telly.

The engaging face of the cam disc and of the cross head can be made rough or ridged as'shown by 24 to act as a kind of lock.

' 'YVhat I claim is:

1. The combination with a clamping member having a slotted opening, of a bolt having a cross head at one end, a nut on the other end of the bolt, a cam disc having a slot to permit passage of the bolt head and having a cam face on one side opposite each wall of the slot, adaptedto engage the arms of the cross head, whereby turning of the disc in one direction will advance it on the bolt away from the head, said bolt having a flattened portion below the cross head to engage the slotted opening in the clamp piece to prevent turning of the bolt on the clamping member.

2. The combination with a clamping memher having an 22 opening, oi a bolt having a cross head at one end, a cam disk having a slot to permit passage of the bolt head and having a cam face on one side opposite each wall of the slot, said face being adapted to engage the arms of the cross head whereby turning of the disk in one direction will advance it on the bolt away from said head, said bolt and clamping member being provided with cooperating moans arranged to prevent turning of the bolt on the clamping member.

Signed at New York city, N. Y., on Febriiary 25, 1921.

WILLIAM E. LOTT. 

